氯代降冰片烷(图a)在解离时生成正碳离子。对这种现象的解释,有两种相反的观点。诺贝尔奖金获得者美国普度大学的H.C.Brown是经典理论的支持者,认为氯代降冰片烷解离时产生两种正碳离子,这两种结构之间的相互转换,是通过碳-碳键像汽车挡风玻璃雨刷那样来回转动而实现的。而每一种结构又都符合碳原子价键的经典规则(图b)。 Chloronorbornane (Figure a) produces positive carbon ions upon dissociation. There are two opposing views of this phenomenon. Nobel Prize Winners HC Brown, of Purdue University in the United States, is a supporter of classical theory. He believes chloronorbornane dissociates to produce two kinds of positive carbon ions. The conversion between these two structures is achieved through the carbon-carbon bond Like a car windshield wipers back and forth rotation and achieved. And each structure is in line with the classical rules of carbon atom valence (Figure b).